Sheet-metal roofing.



. K. ROTH. SHEET METAL ROOFING. APPLIUATION FILED JULY 19,1912.

Patented Sept. 9, 1913.

in :5 r m AY/IT/VESSE-S KARL BOTH, or mean naurn, mnrana.

- SHEIll/.lT-llll'.IEITAJZI ROOFING.

Specification of Letters Patent.

Application filed July 18, 1912. Serial No. 710,314.

rat teasepeaiaie.

To all whom it may concern:

Be it known that I, KAll-L ROTH, a citizen of the United States,residing at Terre Haute, in the'county of Vigo and State of Indiana,have inventedcertainnew and useful Improvements in Sheet-Metal Roofing,of which the followingis. a specifieatioin This invention relates toimprovements in sheet-metal roofing, and the object is to pro.

vide roofing plates, preferably of galvanized sheet-iron, of suchconstruction atthe joints of'the sheets that bot-h edges may be easilyand securely nailed without causing leaks.

1 Another object of the invention is to practically eliminate capillaryaction atthe joints, and, in case any water starts through the joint bycapillary action to collect and carry it off before it reaches thesheathing or roof boards. v

Another object of the invention is to so fornrthe parts at the jointthat they will go together properly without requiring them to be fittedby expert workmen, thus enabling" this material to be sold and shippedto farmers and Others to be used by them in constructing'their ownroofs.

I accomplish the objects of the invention by the means illustrated inthe accompany-.

. ini drawing, in which-,-

igure 1 is a horizontal vertical section of .a roof provided with myimproved sheetmetal covering. Fig. 2 is a fragmentary view inperspective of a. roof showing one of the joints in vertical section,and Fig. 3 is a section of one of the joints showing a slightlymodified'form of my device.

Like characters of reference indica'te like parts throughout the severalviews of the drawing.

4 is the sheathing or roof board of any usual and suitable construction.

5 are the roof, plates which are usually formed out oI galvanizedsheet-iron, thelongitudinal dimensions of which extend from the eave tothe ridge or comb of the roof, and it is to the means'for joining thelon .tudinal edges of these strips to prevent lea age, that my inventionparticularly relates.

One longitudinal edge of each sheet 5 is pr0- vided with a pair ofparallel inverted V- shaped corrugations 6 and 7-, the inner wall of thecorrugation 6 being preferably a little nearer vertical than thecorresponding wall 1 jof the corrugation for reasons which willpresent-1y appear. The edge having the cor-' rugations 6" and-.7 will bethe under portion,th'at is, the part that is overlapped by the edge ofanadjacent sheet in making a joint. The o posite longitudinal edge of thesheet 5 will have asingle longitudinal cor-v rugation with oblique sidesand flat top, of

suflicient widt-h between its'side's to embrace same'slope as the innerwall of the corrugation 7, but it will not extend into contact with theton-surface of the sheet 5, by approximately a third of an-inch, inorder to allow for a considerable depth'ol rain-water on the uppersurface of saidaroof plates before reach ng the wall 8 where capillaryaction would begin between said wall 8 and the contacting wall of thecorrugation 7. This eliminates 'much of the danger due tocapillaryaction. The top 9 rests upon the apexes 5 both of-thecorrugations 6 and 7 of the adja- Y cent sheet. The outenwall 8 will .beof the of thecorrugations 6 and 7, merging into an arch l0 and thenceinto-the oblique inner. wallll which connects with thebody of the plate5. The arch 10 produces a bead-like formation through which the nails 12are driven for SQCIII'lIlg' the roof platesto the boards. 4. Thelocation of the corrugation 6 under the arch or bead 10 supports andstiffens the latter for convenient nailing without .danger'of materiallydenting and battering the oint out of shape. The supportafi'ordincreased by increasingthe angularity of the inner'wall ofthecorrugation 6, in the manner hereinabove mentioned.

It is important thatthe apex of the. corrugation 6 be at one sideof thebead 10 to guard against the possibility of the point of the nail 12being deflected into the gutter between the two corrugations 6and 7.This gutter 13 is intended and particularly adapted to collect any waterpassing by capillary action overinto it between wall 8 and thesupporting wall of corrugation 7, andshould' the nail 12- be deflectedinto the gutter 13, it would perforate thebottom of the guttercausingdisastrous leakage. But by placing the apex of corrugation 6 to one sideof the bead 10 the nail, after passing through the head 10, will contactwith the oblique wall of the. corrugation 6 immediately. under it,

ed .tothe head 10 by the corrugation 6 is and will pass directly'throughit innearly every case, and if deflected at all it willbe in a directiontoward the body of the sheet 5. The principal purpose for continuing theouter wall of the corrugation 6 down into contact with the body of thesheet at the bend forming the wall 11 is to guide the bent edges of thesheets into their proper relative position with the apex of corrugation6 at one side of the bead 10, and the wall Sin contact with itssupporting wall of the corrugation 7 The head 10 clearly defines theline where all nails are to be driven, and by driving the nails at thetop of the bead, in stead of more or less down on a sloping side as isfrequently done, there is little or no chance for rain-water to leakthrough the nail-hole, because the nail-hole is located at the very topof the water shed where only single vertical drops could pass throughit. In the modification shown in Fig. 3 the corrugation 7 is made lowerthan the corrugation 6 whereby a lateral slope is given to the top 9,which insures a more thorough and rapid draining off of the rain-water.

embrace both ,corrugations of the sheet be-' low, the inner side and topof said single corrugation being joined by an arch forming an externallyappearing bead, and the apex I of the nearest underlying corrugationbeing approximately at the junction of the bead and top of said singlecorrugation.

In. witness whereof I have hereunto set my-hand and seal atIndianapolis, Indiana, this, 11th day of July, D. one thousand ninehundred and eleven.

KARL ROTH. [n s.]

Witnesses:

L. B. WOERNER, F. W. WOEBNER.

